jquery - OnActionExecuting 事件未返回 jsonResult

Question

我创建了一个 ActionFilterAttribute，用于在允许处理 MVC Controller get/post 请求之前验证帐户是否可用于处理。如果该帐户不可用，我想向客户返回错误。如果请求是 ajax post，我想在响应中包含 json 数据。由于某种原因，只有当浏览器和网站在同一台机器上运行时，json 数据才会返回到浏览器。如果我在另一台计算机上浏览该网站并执行 ajax post，则响应内容类型将返回为“text/html”。但是，如果浏览器与网站在同一台计算机上运行，​​则响应内容类型将正确返回为“application/json”。

我做错了什么？

ActionFilter属性

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
    base.OnActionExecuting(filterContext);

    if (filterContext.Result == null)
    {
        if (IsAccountUnavailable(Key))
        {
            if (filterContext.HttpContext.Request.IsAjaxRequest())
            {
                filterContext.HttpContext.Response.StatusCode = (int)HttpStatusCode.Conflict;
                filterContext.HttpContext.Response.ContentType = "application/json";
                filterContext.Result = new JsonResult
                {
                    Data = new {Error = "Unavailable", Url = GetLogOffUrl()},
                    JsonRequestBehavior = JsonRequestBehavior.AllowGet
                };
            }
          else
                filterContext.Result = new RedirectResult(GetLogOffUrl());
        }
    }
}

jQuery ajax 帖子

$.ajax({
    url: window.location.href,
    type: 'POST',
    data: JSON.stringify(ko.mapping.toJS(serverModel.SelectionsViewModel)),
    contentType: "application/json; charset=utf-8",
    dataType: 'json'
})
    .done(function (data) {
        if (data.isValid)
            window.location.href = serverModel.NextView();
        else
            showGenericSaveError();
    })
    .fail(function (jqXhr) {
        handleAjaxError(jqXhr);
    });
};

Answer 1

感谢一位同事发现了以下帖子，我的问题已得到解决。我需要设置 Response.TrySkipIisCustomErrors = true

Returning http status code 409 Conflict (without ASP.NET MVC alterations)

工作代码...

public override void OnActionExecuting(ActionExecutingContext filterContext)
{
    base.OnActionExecuting(filterContext);

    if (filterContext.Result == null)
    {
        if (QuoteServiceLayer.IsAccountUnavailable(AccountKey, EnrollmentPeriodType, EmployeeKey))
        {
            if (filterContext.HttpContext.Request.IsAjaxRequest())
            {
                filterContext.HttpContext.Response.StatusCode = (int)HttpStatusCode.Conflict;
                filterContext.HttpContext.Response.TrySkipIisCustomErrors = true;
                filterContext.Result = new JsonResult
                {
                    Data = new {Error = "Unavailable", Url = GetLogOffUrl()},
                    JsonRequestBehavior = JsonRequestBehavior.AllowGet
                };
            }
        else
            filterContext.Result = new RedirectResult(GetLogOffUrl());
        }
    }
}